<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>接下来给阴影添加一个模糊效果</title>
    <style>
        /* 接下来给阴影添加一个模糊效果 */
        div {
            width: 300px;
            height: 100px;
            padding: 15px;
            background-color: yellow;
            box-shadow: 10px 10px 5px grey;
        }
    </style>
</head>

<body>

    <div>This is a div element with a box-shadow</div>

</body>

</html>